[For Elementary School Students] A Three-Choice Dinosaur Quiz to Learn Trivia and Knowledge

40m。

Brachiosaurus was a herbivorous dinosaur that appeared in the Late Jurassic. It is said to have reached up to 40 meters in length and weighed between 40 and 70 tons. Thinking of it as about the size of a Boeing 737-800 airplane, it’s astonishingly huge!

For thermoregulation

The plates on a Stegosaurus’s back contain many capillaries. It is thought that by exposing those plates to lots of sunlight to warm the blood, or to wind to cool it, the animal regulated its body temperature. Those plates on its back also look pretty formidable, don’t they?

About 230 million years ago.

Dinosaurs first appeared during the Triassic period, about 230 million years ago. They are said to have thrived for roughly 160 million years until their mass extinction around 66 million years ago. A wide variety of species lived during that time, ranging from enormous ones about 30 meters in length to small ones only a few tens of centimeters long.

belly button

Dinosaurs are animals that hatch from eggs, and unlike mammals, they do not grow by receiving nutrients from a parent through a placenta. The navel is the mark left by the umbilical cord that connects mammals, including humans, to the placenta while they develop in the mother’s womb. Ears and noses also exist in dinosaurs, and these features are seen in modern birds as well, which are considered the evolved descendants of dinosaurs.

Microraptor

Some of you may have gotten it right from the word “micro.” Microraptor was a primarily tree-dwelling dinosaur, considered an ancestor of birds, and is said to have had feathers. Its sharp claws may have been for gripping trees securely. Its fossils were discovered in China.

tooth

The most important clue to understanding the diets of dinosaurs is their teeth preserved in fossils. From their shape—such as sharp teeth suited for tearing the flesh of prey or flat, broad teeth for efficiently eating leaves and other plants—we can tell whether they were carnivores or herbivores. It is also considered possible to infer the types of food they ate from distinctive wear patterns and carved-like markings.

herbivorous dinosaur

Do you know the term “survival of the fittest”? It describes a food chain in which the strong prey upon the weak. Because of this relationship, large carnivorous animals have smaller populations both on land and in the water. There are various theories, but the smallest herbivorous dinosaur is said to have been Eosinopteryx.